Ecological risk assessment of heavy metals in sediment in the upper reach of the Yangtze River

Environmental Science and Pollution Research International
Yu-Jun YiShanghong Zhang

Abstract

Heavy metal pollution in China's Yangtze River basin has been of high concern. The concentrations of heavy metals (Cr, Cd, Hg, Cu, Zn, Pb, and As) in the sediment were investigated in the upper reaches of the river, China. Sediment quality guidelines (SQGs), an enrichment factor (EF), an index of geo-accumulation (I geo), and potential ecological risk were used to evaluate the extent of contamination from the heavy metal concentrations in the sediment. Among the seven metals, a noticeable degree of pollution was seen only in the case of Cd and Cd posed a considerable ecological risk at some sample sites. The Pearson correlation analysis was implemented to determine the relationships among the heavy metals, and principal component analysis (PCA) was performed to determine the most common pollution sources. The elements As, Cd, Pb, and Zn were grouped together, and the anthropogenic sources of these heavy metals were closely related. The sites with higher Cd concentrations were mainly confined to the river's reach near industrial areas. Controlling the pollution sources will effectively reduce the pollutant concentrations in the sediment.

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Citations

Sep 28, 2017·Environmental Science and Pollution Research International·Xiaolong WangYongjiu Cai
Oct 11, 2017·Environmental Science and Pollution Research International·Yanjie CuiFen Huang
Aug 7, 2017·Environmental Science and Pollution Research International·Hua ZhangZhenglei Xie
Oct 27, 2017·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Xu WangWenjie Liu
May 11, 2017·Environmental Science and Pollution Research International·Fengchao JiaoWenjie Liu
Apr 4, 2021·International Journal of Environmental Research and Public Health·Gor GevorgyanAshok Vaseashta
Jul 3, 2021·International Journal of Environmental Research and Public Health·Guoqi Lian, Xinqing Lee
Jan 13, 2022·Environmental Science and Pollution Research International·Imali Kaushalya HerathHuang Ping
Jan 28, 2022·Bulletin of Environmental Contamination and Toxicology·Yafeng LiuZhengqiu Fan
Jan 29, 2022·Bulletin of Environmental Contamination and Toxicology·Tingting JiangQixin Wu

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